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<?php //2014-01-28 09:43:05.461371 var_dump(strtotime('2014-01-28 09:43:05.461371')); var_dump(date('Y-m-d H:i:s.u', 1390898585));
Output for 5.2.2 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(1390898585) string(26) "2014-01-28 09:43:05.000000"
Output for 7.3.32 - 7.3.33, 7.4.26, 8.0.13
int(1390902185) string(26) "2014-01-28 08:43:05.000000"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.1
int(1390898585) string(21) "2014-01-28 09:43:05.u"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
int(-1) string(21) "2014-01-28 09:43:05.u"

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